Dividing wall column for fractionation of a multicomponent mixture
    1.
    发明申请
    Dividing wall column for fractionation of a multicomponent mixture 有权
    分隔壁柱用于多组分混合物的分馏

    公开(公告)号:US20110139604A1

    公开(公告)日:2011-06-16

    申请号:US09782305

    申请日:2001-02-14

    IPC分类号: B01D3/16

    摘要: A dividing wall column comprises the following segments:a) an upper column region (1),b) an enrichment section (2) of the feed section,c) a stripping section (4) of the feed section,d) an upper part (3) of the offtake section,e) a lower part (5) of the offtake section,f) an intermediate region (9) of the feed section,g) an intermediate region (10) of the offtake section andh) a lower column region (6).For the purposes of the present invention, it is essential that the dividing wall (7) is located vertically between the segments b) (2) and d) (3) and between the segments c) (4) and e) (5), the segments b) (2), d) (3), c) (4) and e) (5) have separation-active internals and the cross-sectional area Ab of the segment b) (2) is at least 10% smaller than the cross-sectional area Ad of segment d) (3), and the cross-sectional area Ac of the segment c) (4) is at least 10% greater than the cross-sectional area Ae of segment e) (5).

    摘要翻译: 分隔壁柱包括以下部分:a)上部柱区域(1),b)进料部分的富集部分(2),c)进料部分的汽提部分(4),d)上部部分 (3),e)出料部分的下部(5),f)进料部分的中间区域(9),g)出料部分的中间区域(10)和h)a 下列区域(6)。 为了本发明的目的,重要的是分隔壁(7)垂直位于段b)(2)和d)(3)之间以及段c)(4)和e)(5)之间。 ,分段b)(2),d)(3),c)(4)和e)(5)具有分离活性的内部,并且段b)(2)的横截面积Ab至少为10 (3)段的横截面面积Ad的百分比小于段c)(4)的横截面积Ac比段e)的横截面积Ae至少大10%( 5)。

    Dividing wall column for fractionation of a multicomponent mixture
    2.
    发明授权
    Dividing wall column for fractionation of a multicomponent mixture 有权
    分隔壁柱用于多组分混合物的分馏

    公开(公告)号:US08092655B2

    公开(公告)日:2012-01-10

    申请号:US09782305

    申请日:2001-02-14

    IPC分类号: B01D1/14 B01D3/42 C07C67/54

    摘要: A dividing wall column is described which includes the following segments:a) an upper column region (1),b) an enrichment section (2) of the feed section,c) a stripping section (4) of the feed section,d) an upper part (3) of the offtake section,e) a lower part (5) of the offtake section,f) an intermediate region (9) of the feed section,g) an intermediate region (10) of the offtake section andh) a lower column region (6).The dividing wall column has a dividing wall (7) is located vertically between the segments b) (2) and d) (3) and between the segments c) (4) and e) (5). The segments b) (2), d) (3), c) (4) and e) (5) have separation-active internals, Segment b (2) has a cross-sectional area Ab which is at least 10% smaller than the cross-sectional area Ad of segment d) (3), and segment c) has a cross-sectional area Ac which is at least 10% greater than the cross-sectional area Ae of segment e) (5).

    摘要翻译: 描述了分隔壁柱,其包括以下部分:a)上部柱区域(1),b)进料部分的富集部分(2),c)进料部分的汽提部分(4),d) 所述出料部分的上部(3),e)所述出料部分的下部(5),f)所述进料部分的中间区域(9),g)所述出料部分的中间区域(10)和 h)较低的列区域(6)。 分隔壁柱具有位于段b)(2)和d)(3)之间以及段c)(4)和e)(5)之间的分隔壁(7)。 段b)(2),d)(3),c)(4)和e)(5)具有分离活性内部,段b(2)的横截面积Ab至少减小10% 比段d)(3)的截面面积Ad大,截面积Ac的截面面积Ac比段e)(5)的横截面面积Ae至少大10%。

    Recovery of formic acid by distillation
    7.
    发明授权
    Recovery of formic acid by distillation 失效
    通过蒸馏回收甲酸

    公开(公告)号:US4551208A

    公开(公告)日:1985-11-05

    申请号:US614280

    申请日:1984-05-25

    CPC分类号: C07C51/44

    摘要: Formic acid is recovered, by distillation, from its mixtures with solvents of the general formula I ##STR1## where R.sup.1 is hydrogen, methyl, ethyl or vinyl and R.sup.2 and R.sup.3 are each alkyl, cycloalkyl, aryl or aralkyl, or R.sup.2 and R.sup.3 together form a 1,4- or 1,5-alkylene group, in each case of not more than 8 carbon atoms, with the provisos that the sum of the number of carbon atoms in R.sup.2 and R.sup.3 is 7 to 14 and that only one of these radicals is aryl, by a method in which the distillation is carried out in the presence of a carboxamide II which is selected from the group consisting of formamide, acetamide, propionamide and the same compounds substituted by N-methyl or N,N-dimethyl, and which has a boiling point lower than that of the solvent I.

    摘要翻译: 通过蒸馏从其与通式I的溶剂的混合物回收甲酸,其中R1是氢,甲基,乙基或乙烯基,R2和R3各自是烷基,环烷基,芳基或芳烷基,或R2和R3 一起形成1,4-或1,5-亚烷基,每种情况下不超过8个碳原子,条件是R2和R3中碳原子数之和为7〜14,只有一个 这些基团是芳基,其中蒸馏在选自甲酰胺,乙酰胺,丙酰胺和与N-甲基或N,N-二甲基甲酰胺取代的相同化合物的羧酰胺II存在下进行, 二甲基,其沸点低于溶剂I.